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100% Pure Pumice Pool & Spa Cleaner, small in size
Removes Lime, Rust, Stains, and Algae from ceramic Tile, Molded or Pneumatic formed Concrete surfaces. No need to drain pool. It is chemically neutral. Works fast as a surface lime remover. Cleans even where the strongest acid chemicals have failed. Ideal as a spot cleaner for rust marks, algae or leaf stains.